Bushing for bowling-balls.



' J. HILL. BUSHING FOR BOWLING BALLS. APPLICATION FILED JUNE 30,1916.

1,217,940. I Patented Mar.6,1917;

lnven Jesseb. 'Z v Atty.

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anssnin; HILL;- or roit'rm vn OREGON, ASSIGNQRVOF ONEEFOURTI-I T melon wi soiv To all whom it may concern: 1

Be it known that I, Jnssn H. HILL, a citizen of theUnited States, and a resident of the city of Portland, county of Multnomah,

State of Oregon, have invented a certain new and useful Improvement in Bushings for Bowling-Balls, of which the following is a specification' This invention relates to an improved form of bushing to be used in the fingerholes of bowling balls.

The hard usageto which bowling. balls are subjected results in the chipping of the edges of the finger-holes. These irregularities deform the ball from a true sphere, and for the purpose of restoring the balls to true shape it is customary to counter-bore the finger-holes and insert therein a bushing, the outer end of which may befinished off to a true spherical surface. This bushing is made of laminated fiber material. This laminated material is composed of thin fibrous sheets, highly compressed together. Prior to my invention the manner of making a bushing from this material was to cut a cylindrical body therefrom in which the laminations were parallel to the base. Consequent usage of a bowling ball having therein a bushing of this character caused the outer laminations to peel ofl", leaving the ball once more irregular.

The main object of the present invention is to provide a bushing of this character in which the laminations will be perpendicular to the base of the bushing. The edges of the laminations willthen assimilate the Wear of usage, and will not be subject to the objectionable peeling off, as previously referred to.

The features of my invention arefully shown in the accompanying drawings, in which:

Figure 1 is anelevation, partly in section, of a bowling-ball having incorporated therein bushings of my invention;

Fig. 2 is a side elevation of a bushing;

Fig. 3 is a plan view of same; and

Fig. 4; is an isometric perspective view of one of the segments from which the bushing is formed, and showing in diagrammatic form the general arrangement of thelaminations.

- a represents a bowling-ball of usual type, and Z) is a finger-hole. The outer end of this hole is counter-bored, and'the bushand a clamping ring larger than the of 'my invention is mounted therein. Said bushing comprises complementary seg Specification ortea rs Patentm Rammed Mm; 191. 7, Application filed June so, .1916. Serial No. 106,988. r

nations will be perpendicular to the base of the. bushing, as shown in Fig. l. After the segments 0 have beenassembled to the form of a true cylinder. a peripheral groove is cut around the lower end of the cylinder, d is pressed in place thereon, so as to firmly hold said segments together.

The bowling-ball is then heated so as to expand the counter-bore, and the bushing is pressed in place therein. Consequent shrinkage of the bore will hold the bushing securely in place. -For the purpose of augmenting this shrink-fit, the base of the bushing and the clamping ring are made slightly outer end of said bushing. The outer end of the bushing is then finished off to conform with the spherical surface of the ball, the interior of the bushing 0 being finished as at e to conform with the hole 6 of the ball.

I claim:

1. The combination with a bowling ball having a counter-bored finger-hole, of a bushing for said hole, said bushing comprising a plurality of complementary segmental sections, and means forclamping said sections together.

2. The combination with a bowling ball having a counter-bored finger-hole, er a bushing for said hole, saidbushing comprising a plurality of complementary segmental sections, and a clamping ring for holding said .sections together.

ing a plurality of complementarysegmental 7 sections of laminated material, and means for clamping said sections together.

4. The combination with a bowling ball having a counter-bored finger-hole, of a bushing for said hole, said bushing comprising a plurality of complementary segmental sections oflaminated material, and a clamping ring for holding said sections together. 5. The combination with a bowling ball having a counter-bored finger-hole, of a. having a counter-bored finger-hole, of a bushing for said hole, said bushing comprisbushing for said hole, said bushing compris- 1-3 ing a plurality of complementary segmental ing a plurality of complementary segmental sections of laminated material, the lamisections of laminated material, the lami- 5 nations being arranged perpendicularly to nations being arranged perpendicularly to the base of the bushing, and means for the base of the bushing, and'a clamping clamping said sections together. ring for holding said sections together.

- 6. The combination with a bowling-ball JESSE H. HILL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

